LinuxQuestions.org
Welcome to the most active Linux Forum on the web.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 01-10-2008, 10:35 PM   #1
procfs
Member
 
Registered: Jan 2006
Location: Sri Lanka
Posts: 651

Rep: Reputation: 34
CPU usage is very high on ML580 HP


Hi

I have a ML580 HP with 4 Intel(R) Xeon(TM) MP CPU 3.00GHz with HT enabled and 12GB of ram.

OS RedHat AS3 update 8
Oracle Database 10g (9.2.0.1)
Some java programs
Number users connected to the database through Oracle Application server is around 150 to 250

I can see CPU usage is 99% can some one help me to identify what is causing this.

Regards
 
Old 01-11-2008, 03:05 PM   #2
cmnorton
Member
 
Registered: Feb 2005
Distribution: Ubuntu, CentOS
Posts: 585

Rep: Reputation: 35
ps or top

If you can, notify your users and stop the oracle service. Then see what's running using top or ps.

Then start having the users log in one by one, and keep monitoring.

If you can get to an x-term while all this is going on, use ps.
 
Old 01-11-2008, 03:34 PM   #3
Tinkster
Moderator
 
Registered: Apr 2002
Location: earth
Distribution: slackware by choice, others too :} ... android.
Posts: 23,067
Blog Entries: 11

Rep: Reputation: 928Reputation: 928Reputation: 928Reputation: 928Reputation: 928Reputation: 928Reputation: 928Reputation: 928
Quote:
Originally Posted by asankacgl View Post
Hi

I have a ML580 HP with 4 Intel(R) Xeon(TM) MP CPU 3.00GHz with HT enabled and 12GB of ram.

OS RedHat AS3 update 8
Oracle Database 10g (9.2.0.1)
Some java programs
Number users connected to the database through Oracle Application server is around 150 to 250

I can see CPU usage is 99% can some one help me to identify what is causing this.

Regards

I concur - top is certainly the first "weapon of choice".
It may help you to see which processes are chewing up CPU.
Are the db and the app-server are on the same machine?

What's the I/O subsystem - the MOST important part in any
real life database application?



Cheers,
Tink
 
Old 01-13-2008, 08:24 AM   #4
archtoad6
Senior Member
 
Registered: Oct 2004
Location: Houston, TX (usa)
Distribution: MEPIS, Debian, Knoppix,
Posts: 4,727
Blog Entries: 15

Rep: Reputation: 234Reputation: 234Reputation: 234
top is is useful, but I haven't used it since I discovered htop. Now I keep a copy running all the time.
 
Old 01-15-2008, 11:38 PM   #5
procfs
Member
 
Registered: Jan 2006
Location: Sri Lanka
Posts: 651

Original Poster
Rep: Reputation: 34
Thanks guys
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
High CPU usage ?! Why? skate Linux - Software 1 04-11-2007 05:55 AM
High Cpu usage untak Debian 21 01-23-2007 06:21 AM
why high load, but no cpu usage? JustinHoMi Linux - General 6 01-11-2006 10:43 AM
cpu usage high corbintechboy VectorLinux 2 07-27-2005 08:11 AM
locking at high CPU usage charon Linux - Newbie 4 03-10-2004 02:21 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 06:52 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration